Tack-pulling apparatus



'Feb. 14, 1928.

v 1,658, 2 H. WARREN-.1:

TACK PULLING APPARATUS 2 Filed Jan- 2. 192

Patented Feb. 14, 1928.

UNITED sr Tss PATENT OFFICE.

FRANK H. WARREN, OF SWAMPSCOTT, MASSACHUSETTS, ASSIG-NOR TO UNITED SHOE MAGHINERYOORPORATION, OF PATEBSON, NEW JERSEY, A CORPORATION' OF JERSEY.

TACK-PULLING APPARATUS,

Application filed January 2, 1925. Serial No. 162;

My invention relates to tack-pulling apparatu's, and especially to the work-engaging elements of apparatus employed to remove lasting tacks from shoe-uppers.

In one 'form of upper-tack-pulling tacks to be pulled must be advanced toward the gage intocoooperation with the pulling member from the same side of the shank and forward projection as that atwhichthe-gage is located. Sometimes, however, becauseoi' the manner in which the machine is set up,

or because of tl'ie'preference ot a particular operator,.better results may be obtained by feeding the line of tacks at the opposite angle, or from the left". i Y 1 My invention has as an object the provision of a machine to the pulling'instrumentalities of which the work may be presented from either side. To gain this end, I combine with the tool a work-engaging member serving as a gage, a guard or a holddown Y and having an intermediate wall at opposite sides of which the pulling member moves.

To arrange the-elements in this relation. the V 5 pulling member'is in sections, separated by a space into which extends a portion of the work-engaging member, as a support ng shank, and also a forwardly projecting holddown wall. The two sections of the device, without the addition of any independent 'elements or necessity for adjustment and presenting generallyfthe usual o 'ierating con- 'ditions, allows the operator to vary the angle ofapproach of the work particular needs. a V Y The accompanying drawing illustrates but "one of the various possible embodiments of 1 the invention,

Fig; 1 showingfln side elevation, an uppertack pulling machine to which my invention is applied; Fig. 2 illustrating the work-engaging elements of the apparatus in perspective; and

is an enlargement 32.

to best satisfy his Fig. 3 being a detail top plan view of these elements.

From a standard 10 projects an arm'12, in which a pulling lever 14 is supported upon an oscillatory link 16. Rotatable driving mechanism 18, acting upon-the inner end of the lever, imparts the desired movement to it. At the outer extremity of the lever is clamped a pulling tool 20 having the usual depres-' sions 22 constituting a. claw and arranged to be moved forward into engagement with the i shanks of tacks driven into the work, and then upward along a cyclic path to remove them from said work. This tool is in two sections 24 and 25, spaced from each other by a slot 26, which extends back into the tool from its pulling edge. Each section is of sufficient width to act effectively alonefor the pulling of the tacks.

Pivoted at 28 upon theiramc-arm 12 is a supporting arm 30, at the outer end of which At onev side of this enlargement are formed vertical ways' 34 to receive theshank 36015 a member G co-opcrating with the pulling tool. A slot-andscrew connection 40, between the member G and the supporting arm, permits the height of the member and its relation to the tool to be varied. The shank is so located that it is received by the slot 26, the-sections of the tool operatingrupon opposite sides of the wall furnished by the shank. The member Gprovides a'work-gage, guard and'holddown for both tool-sections, it having sections 38 and 39 respectively co-operating withthe'tool-sections 24 and 25. Extending at each side of the shank is a substantially horizontal wall 42. into proximity with theforward edge i-i oi: which the line'of i e lfby contact with the tacks, retains them within the effective operating area-of the claws. The under sides oftl1eavalls42 determine the upward movement ofthe work toward the paths ofthe tool sections, guarding the upper'S against injury by the tool, andalso act as abutments to resist the pulling action upon the work. At the outer extremities of the horizontal walls 42 rise vertical walls 47, beside which the outer sides of the tool-sections move, these portions 47 beingto protect the hands of the operator against injury.

To prevent the claw from catching be neath the loose edge s of the lasted-over tion 39 are'employed, the dotted lines in Fi 3 indicating. the position of the work. In

either case, the action isthe same, the operator bringing forward the tacks successively into proximity with the edge as of the section which he chooses and at the desired angle thereto, at which point they are engaged and drawn from the work by thecorresponding. oscillatory claw-section. To insure the edges of the upper from being caught by either of the tool-sections, the Vertical or shank-wall 36 is extended for- Wardly at 48, being: preferably rounded at its outer extremity. This furnishes a holddown for the edge, common to'both operating. sectionsand substantially at right angles to their holddown walls 4.2, it acting. upon th upper in the same manner, whether the work be at the right or the left. The holddown 48 and the oppositely extending gage edges 44: form recesses toward either of which the I line oftacks T may be directed as the work is presented to one side or the other of the machine. Such an organization. it will be seen, provides a double-duty machine without the'addition of parts or change of position thereof, there being simply an extension of two elements at opposite sides of an element functioning with both.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States 1. In a tack-pulling machine, a .movable pulling member, and a work-engaging member having a supporting shank, said pulling member being. movable upon opposite sides of the said shank.

2. In a tack=pulling machine, a movable pulling member provided with pulling sections separated by a space and movable in parallel paths, and a work-engaging member having a wall extending into said space.

8. In a tack pulling machine, a pulling member having separate sections, and a work-engaging member provided wit-h a'plurality of portions co-operating respectively with the pulling sections, and also provided with a portion common to said sections.

If an operator choosesto work from.

4:. In a machine for pulling lasting tacks from shoes, a work holddown member having an upright wall, and a pulling member having a tack engaging end moving in a cyclic path simultaneously upon opposite sides of the wall to pull a tack presented to the machine at either side ofsaid wall.

5.- In a taclcpulling machine, a member havingwork-holddown walls lying at an angle to each other, and a pulling member operating atopposite sides of one of the holddown walls.

6. In. a tack-pulling machine, a gage member arranged to limit the approach of the work to the machine and having a substantially vertical wall, and a. pulling member provided with claws separated by a space to receive said vertical wall.

7. In a tack-pulling machine, abifurcated tack-pulling claw, and a gage member adjustably. mounted in fixed position upon the machine and having a portion dividing said claw.

S. In a tack-pulling. machine, a claw in which there is a slot, and a work-holddown member extending into the slot.

9. In a power driven tackepulling machine for boots and shoes, a support, a shoe holddown member depending therefrom and. arranged to engage the work at its lower end, and a pulling tool having tack-pulling end portions operating repeatedly in cyclic paths at oppositesides of said member adjacent to said end so that the work may be presented ineither of two paths angularly related to opposite sides of the shoe-engaging endof said holddown member.

10. In atack-pulling machine, a support, a member having a substantially vertical shank secured to the support 'and' provided with a gage-edge extending at opposite sides of the shank, and a pulling member having a divided claw operating over the gage-edge at both sides of the shank.

11. In a tack-pulling machine, a support, a member having a substantially vertical shank secured to the support and provided with a forwardly extending holddown-projection and a gage-edge extending at opposite sides ot' the projectiomand a pulling member having. a divided claw operating over the gage-edge at bot-h sides of the shank and projection.

12. In a tack-pulling machine, a support, a member having a substantially vertical shank secured to the support and provided with a gage-edge extending at opposite sides;

of the shank, and a pulling member having a divided claw operating over the gage-edge at both sides of the shank, SfllClfiI'St-lltflld member having vertical walls disposed outside the pulling member at the ends of the gage edges. a

13. In a tack-pulling machine, a pulling member the effective portions ofwhich move through cyclic paths into and out of contact with tacks presented to one or another portion of said pulling member and a w0rkengaging member having a Wall on oppo site sides of which the effectiveportions of said pulling member move as the Workengaging member is held in contact with the WOIk.

14. In a tack-pulling machine, a sup ort, a work-engaging member depending rom said support and provided With a forwardly extending holddown member and gage members extending in opposite directions from said holddovvn member to provide angular recesses toward either of Which a line of tacks may be directed, and a tack-pulling memberhaving portions operating at either side of said depending member.

In testimony whereof I havev signed my name to this specification.

FRANK H. WARREN. 

